| ABD | Allouez Bay Dock Co. | 1903- | | GN |
| B&NM | Brainerd & Northern Minnesota | 1892-1901 | Gull Lake Lumber | M&I, NP |
| BB&E | | 1892-1903 | | NP |
| BCR&N | Burlington, Cedar Rapids & Northern | 1876-1902 | Burlington, Cedar Rapids & Minnesota | CRI&P |
| BDL&S | Brandon, Devils Lake & Southern | 1905- | | GN |
| BF&IF | Big Fork & International Falls | 1906-1923 | | NP |
| BF&N | Big Fork & Northern | 1905 | | M&I, NP |
| BN | Burlington Northern | 1970- | NP, GN, CB&Q, SP&S, WV | BNSF |
| BNSF | Burlington Northern-Santa Fe | 1995- | Burlington Northern: Santa Fe | |
| BW | Bayfield Western | 1901-1903 | | NP |
| C&GW | Chicago & Great Western | 1885-1890 | | C&NP |
| C&M | Caledonia & Mississippi | 1873- | | CM&StP |
| C&NP | Chicago & Northern Pacific | 1890-1897 | Chicago & Great Western | WC (NP), CTT |
| C&NW | Chicago & North Western | 1864- | Chicago, St. Paul & Fond du Lac | C&NW |
| C&PS | Columbia & Puget Sound | 1880-1916 | Seattle & Walla Walla; Seattle Coal & Transport | PCC |
| C&RM | Columbia & Red Mountain | 1895-1907 | | GN |
| CB | Casselton Branch | 1880- | | NP, GN |
| CB&N | Chicago, Burlington & Northern | 1885-1899 | | CB&Q |
| CB&Q | Chicago, Burlington & Quincy | 1856-1970 | Chicago & Aurora | BN |
| CCD&M | Chicago, Clinton, Dubuque & Minnesota | 1878-1880 | Clinton & Dubuque; Dubuque & Minnesota | CM&StP |
| CD&M | Chicago, Dubuque & Minnesota | 1871-1877 | Dubuque & Minnesota | D&M, CCD&M, CM&StP |
| CdAR&N | Coeur d'Alene Railway & Navigation | 1886-1888 | | NP |
| CE | Centralia Eastern | 1909-1917 | | NP |
| CGW | Chicago Great Western | 1893-1968 | Chicago, St. Paul & Kansas City | C&NW |
| CIR | Cuyuna Iron Range | 1908- | | Soo |
| CM&PS | Chicago, Milwaukee & Puget Sound | 1909-1912 | | CM&StP |
| CM&StP | Chicago, Milwaukee & St. Paul | 1874-1927 | Milwaukee & St. Paul | CMStP&P |
| CM&W | Caledonia, Mississippi & Western | 1879-1880 | | CCD&M, CM&StP |
| CMStP&P | Chicago, Milwaukee, St. Paul & Pacific | 1926- | | CMStP&P |
| CN | Canadian National | | | |
| CNS | Crows Nest Southern | 1901- | | GN |
| CP | Canadian Pacific | | | |
| CRI&P | Chicago, Rock Island & Pacific | 1866-1980 | Chicago & Rock Island; Mississippi & Missouri | |
| CRRofM | Central Railroad of Minnesota | 1872-1879 | | SM, CM&StP |
| CStP&KC | Chicago, St. Paul & Kansas City | 1886-1893 | Wisconsin, Iowa & Nebraska | CGW |
| CStPM&O | Chicago, St. Paul, Minneapolis & Omaha | 1880-1957 | Chicago, St. Paul & Minneapolis | C&NW |
| CyN | Cuyuna Northern | 1911-1914 | | NP |
| D&GN | Dakota & Great Northern | 1900- | | GN |
| D&GNTC | Dakota and Great Northern Townsite Co. | | | |
| D&IR | Duluth & Iron Range | 1874-1930 | | DM&IR |
| D&M | Dubuque & Minnesota | 1877-1878 | Chicago, Dubuque & Minnesota | CCD&M |
| D&Man | Duluth & Manitoba | 1884- | | NP |
| D&NE | Duluth & Northeastern | 1898- | | |
| D&W | Duluth & Winnipeg | 1878-1896 | | DS&W, GN |
| D&WT | Duluth & Winnipeg Terminal | 1892- | | GN |
| DC&N | Duluth, Crookston & Northern | 1889- | | NP |
| DM&IR | Duluth, Missabe & Iron Range | 1937- | | |
| DM&N | Duluth, Missabe & Northern | 1891-1937 | | DM&IR |
| DMR&N | Duluth, Mississippi River & Northern | 1892-1899 | | EofM, GN |
| DRL&W | Duluth, Rainy Lake & Winnipeg | 1905-1912 | Duluth, Virginia & Rainy Lake | DW&P, CN |
| DRW&S | Duluth, Red Wing & Southern | 1880-1901 | | WM&P, CGW |
| DS | Duluth Short Line | 1886- | | StP&D, NP |
| DS&W | Duluth, Superior & Western | 1896-1898 | Duluth & Winnipeg | DS&WT, Eof M, GN |
| DS&WT | Duluth, Superior & Western Terminal | 1896-1903 | DS&W | EofM, GN |
| DSB | Duluth/Superior Bridge Co. | | | |
| DSS&A | Duluth, South Shore & Atlantic | 1886-1961 | | Soo |
| DT | Duluth Transfer | 1890-1902 | Stu's data | NP |
| DTerm | Duluth Terminal | 1887-1921 | | Soo, GN |
| DUD&T | Duluth Union Depot & Transfer | 1892- | | NP |
| DV&RL | Duluth, Virginia & Rainy Lake | 1901-1905 | | CN |
| DW&P | Duluth, Winnipeg & Pacific | 1909- | | CN |
| DWater&P | Duluth, Watertown & Pacific | 1885-1907 | | GN |
| E&MC | Everett & Monte Cristo | 1892-1900 | | MC, NP |
| E&S | Elliston & Southern | 1897-1908 | | NP |
| EofM | Eastern Railway of Minnesota | 1887-1902 | | GN |
| ERM | Eastern Railway of Minnesota | | | |
| ESL | Electric Short Line | 1908-1924 | | MW, C&NW |
| F&S | Fargo & Southern | 1881-1885 | | CM&StP, CMStP&P |
| F&SW | Fargo & Southwestern | | | NP |
| FG&S | Farmers Grain and Shipping | | | |
| Fh&S | Fairhaven & Southern | 1888-1898 | | S&M, GN |
| G&P | Gilmore & Pittsburgh | 1911-1940 | | NP |
| GB&W | Green Bay & Western | | | |
| GBW&StP | Green Bay, Winona & St. Paul | 1881-1896 | Green Bay & Minnesota | GB&W |
| GN | Great Northern | 1889-1970 | StPM&M | BN |
| GRC&StC | Grantsburgh, Rush City & St.Cloud | 1878- | | StP&D, NP |
| H&D | Hastings & Dakota | 1867-1882 | | CM&StP, CMStP&P |
| IE | Inland Empire | 1920- | | GN |
| KR | Kettle River | 1886- | | StP&D, EofM, GN |
| KV | Kootenai Valley | 1898-1912 | | GN |
| LC&M | LaCrosse & Milwaukee | 1854-1866 | | M&W, M&StP, CM&StP |
| LF&D | Little Falls & Dakota | 1879- | | NP |
| LS&M | Lake Superior & Mississippi | 1861-1877 | St. Paul & Lake Superior | StP&D |
| M&D | Minneapolis & Duluth | 1871-1881 | | LS&M, M&StL, NP |
| M&GN | Minnesota & Great Northern | 1904- | | GN |
| M&I | Minnesota & International | 1900-1941 | Brainerd & Northern Minnesota | NP |
| M&N | Minneapolis & Northern | 1913-1915 | | MA&CR |
| M&NU | Mankato & New Ulm | 1899- | | C&NW |
| M&NW | Minneapolis & Northwestern | 1878- | | StPM&M, GN |
| M&P | Minnesota & Pacific | 1857-1862 | | StP&P, StPM&M, GN |
| M&SE | Moorhead & Southeastern | 1884- | | StPM&M, GN |
| M&StC | Minneapolis & St. Cloud | 1856- | | StPM&M, GN |
| M&StCx | Minneapolis & St. Croix | 1883- | | Soo |
| M&StL | Minneapolis & St. Louis | 1870- | | C&NW |
| M&StP | Milwaukee & St. Paul | 1863-1874 | | CM&StP, CMStP&P |
| MA&CR | Minneapolis, Anoka & Cuyuna Range | 1915-1975 | Minneapolis & Northern | |
| MBL | Minneapolis Belt Line | 1917- | | GN |
| MBL&T | Minnesota Belt Line & Transfer | 1887-1898 | | MTr, MCom |
| MCom | Minnesota Commercial | 1987- | Minnesota Transfer | |
| MD&W | Minnesota, Dakota & Western | 1912- | | |